Loose-leaf binder



J. C. DAWSON.

LOOSE LEAF BINDER. APPLICATION FILED JAN. 26,1921.

. 1,410,001. Patented 101121, 1922.

as. 24 2 Y 2 i! 21 ,23

damwf W UNITED STATES PATENT OFFICE.

J'AMES C. DAWSON, OF WEBSTER GROVES, MISSOURI.

LOOSE-LEAF BINDER.

To all 10 7mm it may concern Be it known that 1, JAMES C. Dawson, acitizen of the United States, and resident of \Vebster Groves, county ofSt. Louis, and State of Missouri, have invented certain new and usefulImprovements in Loose-Leaf Binders, of which the following is aspecification, and which are illustrated in the accompanying drawings,forming a part thereof.

The invention relates to loose leaf binders and has as an object theprovision of a device of this nature in which the leaves will be kept inbetter alignment than in devices heretofore known. A further object isthe provision of an improved latch for holding the binder closed.

An illustrative embodiment of the invention is shown in the accompanyingdrawings, in which:

Fig. 1 is an end view of a closed binder;

Fig. 2 is a vertical section on line 2-2 of Fig. 1;

F ig. 3 is a detail plan view of a portion of the binder open;

Fig. 4 is a perspective view of a removable post holder and posts on areduced scale, and

Fig. 5 is a detail perspective view of a corner of a leaf illustratingthe perforations.

The binder shown in the drawings comprises a back cover 10, hinged to abinding strip 11, at 12. The binding strip comprises a cover portion 13having a metal strip 14 secured thereto as by rivets 15. Stationaryposts 16 and 17 are rigidly secured to the strip 14.

A metal back 18 for the binder is hinged to the edge of the strip 14, asat 19, and coiled torsion springs 20, 21, are placed upon the pintle 22of the hinge and tend to throw the back 18 away from the leaves 23. Afront latch strip 24 is formed integral with the back 18 by bending themetal adjacent one edge of the sheet at right angles to the back, as at25. The cover for the back 18 and strip 24 is carried around the angle25 and is secured to the strip 24 by rivets 26. The front cover ishinged, as at 27, to the strip cover.

A removable front binder strip 28 carries posts 29, 30, rigidly securedthereto. The strip 28 has perforations 31, 32 to pass over the ends ofposts 16, 17 Portions 33, 34, at the ends of strip 28, are offset, as at35, 36, so as to provide horizontal latch members and the ends of thestrip are turned down- Speeification of Letters Patent. Patent d M 211922 Application filed January 26, 1921.

Serial No. 440,012.

are depressed with flexure of the portions 35,

36, of the strip, thus releasing the catches 39, 40, when the backmember 18 is thrown away from the leaves 23 by action of the springs 20,21. The strip 28 and posts 29, 30, may then be freely removed, alongwith all leaves above the leaf in the binder to which access is desired.The removed leaves and posts 29, 30, may be readily returned in thewell-known manner.

The fact is well known by those familiar with the manufacture of looseleaf binders utilizing posts to hold the leaves, that the holes in theleaves must be substantially larger than the diameter of the posts inorder to allow freedom of manipulation of the leaves in the use of thebinder. The use of such perforations results in faulty alignment of theleaves. This defect is remedied by the present invention by thecharacter of perforations shown in Fig. 5. As there indicated the holes41 for the posts 29, 30 are made circular and larger in diameter thanthe posts. But the holes 42 for the posts 16, 17 are made only wideenough to easily pass over the posts and freedom of movement is providedfor by excess diameter laterally. As a result, the ends of the leavesare preserved in much improved alignment without sacrifice in freedom ofmanipulation.

Minor changes may be made in the physical embodiment of the inventionwithout departing from its spirit.

I claim as my invention:

1. A loose leaf binder comprising, in combination, a plurality of setsof binding posts, leaves perforated to pass over said posts, theperforations for one set of posts being greater on all diameters thanthe posts of that set and the perforations for another set being greaterthan the posts in one direction on y.

2. A loose leaf binder comprising, in combination, a plurality of setsof binding posts,

leaves perforated to pass over said posts, the

perforations for one set of posts being greater on all diameters thanthe posts of that set and the perforations for another set being greaterthan the posts in the direction of alignment of the posts and beingsubstantially the same size as the diameter of the posts in thedirection perpendicular to the alignment of the posts.

3. A loose leaf binder comprising, incombination, a binding strip, aplurality of bindingupqst s mounted thereon, a back hinged theietb, alatch strip rigid with said back and projecting at anangleitheretopcatches carried by said latch strip, abinder strip ada tedto be -removably received on said bin ing posts, a binding postrigidtherewith, latches on saidbinding strip coacting withsaid catches. a

4'. A loose leaf binder comprising, in combination, a binding strip, aplurality. of

binding posts mounted thereon, a back hin d thereto, a latch strip rigidwith said bac and projecting atan angle thereto, catches carried bysaidlatchstrip, a binder strip adapted to be removably received on posts, abinding post carried by said removable strip, upwardly ofiset portionscarried by said removable strip. adapted to "coact with said catchprojections to retain the back in closed position.

JAMES C. DAWSON.

